Bug 2424515 (CVE-2025-34458)

Summary: CVE-2025-34458 github.com/wb2osz/direwolf: Dire Wolf: Denial of Service via malformed APRS MIC-E messages
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Dire Wolf. A remote, unauthenticated attacker can exploit a reachable assertion vulnerability in the APRS MIC-E decoder. By sending a specially crafted AX.25 frame that contains a MIC-E message with an empty or truncated comment field, the attacker can cause the application to terminate. This leads to a Denial of Service (DoS), making the system unavailable.
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Bug Depends On: 2424537, 2424538    
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Description OSIDB Bzimport 2025-12-22 22:04:36 UTC 
wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 3658a87, contain a reachable assertion vulnerability in the APRS MIC-E decoder function aprs_mic_e() located in src/decode_aprs.c. When processing a specially crafted AX.25 frame containing a MIC-E message with an empty or truncated comment field, the application triggers an unhandled assertion checking for a non-empty comment. This assertion failure causes immediate process termination, allowing a remote, unauthenticated attacker to cause a denial of service by sending malformed APRS traffic.